Question

Which one can reverse the harmful effect of previous mutation?

• A. Intergenic mutation
• B. Intragenic mutation
• C. Suppressor mutation
• D. Indirect suppression

Answer 1

Answer: (C)

Suppressor mutation

A suppressor mutation is a mutation that nullifies the effect of an earlier mutation thereby reversing its effect. An intragenic suppressor is a mutation which is a suppressor mutation that occurs in the same gene where the first mutation had occurred. In intergenic suppressor mutations, the suppressor mutation happens in a location somewhere else in the DNA, which is not in the same gene where the original mutation had happened.

So, the correct answer is 'Suppressor mutation'.